(e) Notice of Default. Immediately after Lessee or any of its corporate officers obtains knowledge of a Default or an Event of Default hereunder or under any other Operative Agreement, Lessee shall notify Lessor in writing of such Default.



 (f) Governmental Consents. Lessee, at its sole cost and expense, shall maintain in full force and effect all governmental consents, licenses, authorizations, approvals, declarations, filings and registrations obtained or effected in connection with this Lease, each Operative Agreement, and/or required by any Applicable Law or by any other Governmental Entity, and every document or instrument contemplated hereby or thereby and to take all such additional action as may be proper in connection herewith or therewith. Lessee further undertakes, at its sole cost and expense, to obtain or effect any new or additional governmental consents, licenses, authorizations, approvals, declarations, filings or registrations of any Governmental Entity as may become necessary for the performance of any of the terms and conditions of this Lease, each Operative Agreement, or any other document or instrument contemplated hereby or thereby or as is otherwise required by Applicable Law.



 (g) No Liens. Lessee, at its sole cost and expense, shall at all times keep the Aircraft free and clear of Liens (excluding, however, any Lessor Liens or Permitted Liens).